activity
19972022
most citedStatistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models

670 citations · 3.6k across the 47 of their papers we have counts for

collaborators

47 papers

astro-ph.GA2022★ 25 cited

An AGN with an ionized gas outflow in a massive quiescent galaxy in a protocluster at

Mariko Kubo, Hideki Umehata, Yuichi Matsuda +13

We report the detection of an ionized gas outflow from an -ray active galactic nucleus (AGN) hosted in a massive quiescent galaxy in a protocluster at (J221737.29+00182…

astro-ph.EP2019★ 32 cited

Kojima-1Lb Is a Mildly Cold Neptune around the Brightest Microlensing Host Star

A. Fukui, D. Suzuki, N. Koshimoto +56

We report the analysis of additional multiband photometry and spectroscopy and new adaptive optics (AO) imaging of the nearby planetary microlensing event TCP J05074264+2447555 (Ko…

astro-ph.GA2019★ 162 cited

Gas filaments of the cosmic web located around active galaxies in a proto-cluster

H. Umehata, M. Fumagalli, I. Smail +15

Cosmological simulations predict the Universe contains a network of intergalactic gas filaments, within which galaxies form and evolve. However, the faintness of any emission from…

astro-ph.GA2019★ 9 cited

Enhancement of HI absorption associated with the large-scale proto-cluster and characteristic structures with AGNs sculptured over Gpc scale in the SSA22 field

T. Hayashino, A. K. Inoue, K. Kousai +10

In the SSA22 field which exhibits a large-scale proto-cluster at , we carried out a spectroscopic survey for Lyman Break Galaxies (LBGs) with the VLT/VIMOS and identified 78…

astro-ph.EP2018★ 23 cited

MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary

S. Miyazaki, T. Sumi, D. P. Bennett +59

We report the discovery and the analysis of the short timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low mass h…

astro-ph.EP2018★ 7 cited

OGLE-2017-BLG-0482Lb: A Microlensing Super-Earth Orbiting a Low-mass Host Star

C. Han, Y. Hirao, A. Udalski +62

We report the discovery of a planetary system in which a super-earth orbits a late M-dwarf host. The planetary system was found from the analysis of the microlensing event OGLE-201…